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What is End-to-end Testing with Example

End to End Testing is the approach in which
tester/developer always validate whether the flow of application/software from
the starting point to the end point is working perfectly or not.

End to End Testing Example - Real

For Example we are testing the web page of
application than the start point will be logging in to web page and the end
point will be logout of the web page means logout from the application/software.

So in this example of End to End Testing, tester/developer
check whether the flow of application from starting to end point is working
fine or not.

So in the above example when we login to
the web page than tester/developer check that after login flow is properly
working or not like they check after login we get into home page or not, they
also check after login we are able to do some work or not, and finally they
check after doing some little bit work we are able to logout from the application
or not. So this is the End to End
testing of web page performed by Developer/Tester, in which they check the
complete flow of application from starting to end point.

Another Example of End to End Testing

Let’s take another example of this testing which
is given below:

Suppose you are logging in to Gmail than
End to End Testing is that after login you get into inbox or not, you are able
to open and compose a mail or not, you are able to forward the mail or not,
then finally you are able to logout from the Gmail or not. So this is the End to End Testing of Gmail in which
tester check the flow of Gmail from starting to end point means from logging to
logout point.

Conclusion

At end we conclude that End to End Testing is considered as the
part of System Testing, and this testing is always conducted (carried out) to
validate the flow of data between different modules. And you may also note that
this testing is obviously conducted before closing the testing.